Patent US2423031A successfully refreshed from Google Patents.
US2423031A
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US
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Fluorescent gaseous discharge lamp system and thermal starting switch
Assignee: CALLITE TUNGSTEN Corp
•
Filing: 1942-06-04
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Granted: 1947-06-24
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Expires: 1962-06-04
Abstract
No abstract record available.
Inventors
- 👤 Kurtz Jacob
- 👤 Waldie James
- 👤 Spina Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:44
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/02; H05B41/04; H05B41/06; Y; Y10; Y10S; Y10S315/00; Y10S315/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB368161A
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GB391242A
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GB419173A
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US2297258A
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US2236697A
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US2266619A
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US2268512A
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US2294203A
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US2300963A
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US2313575A
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US2305223A
Cited
US2268522A
Cited
US2294191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-23 | 1950-12-23 | 1951-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-23 | 1954-12-23 | 1955-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-23 | 1958-12-23 | 1959-06-24 | $7700.00 | Window Closed / Lapsed |